Oxidation of Cu-7Cr and Cu-7Cr-4Al alloys at 1173K in 0.1MPa of pure oxygen

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	Oxidation of Cu-7Cr and Cu-7Cr-4Al alloys at 1173K in 0.1MPa of pure oxygen
	S. Y. Wang; T. J. Pan; S. Wang; Y. Niu
	2006
发表期刊	High Temperature Materials and Processes
ISSN	0334-6455
卷号	25 期号:4 页码:225-230
摘要	The oxidation behavior of a binary Cu-7Cr and a ternary Cu-7Cr-4Al alloy has been studied at 1173K in 0.1 MPa O-2 and compared with that of a binary Cu-4Al alloy. Oxidation of Cu-7Cr produced external copper oxide scales, while the internal oxidation of chromium was almost absent. The addition of 4 at.% Al to Cu-7Cr formed an alumina layer in contact with the alloy after an initial faster stage when also copper was oxidized. Cu-4Al also formed an alumina layer, but the scale thickness was irregular due to the presence of oxide nodules, while the long-term rate constant was larger than for the ternary alloy. Thus, the addition of chromium to Cu-4Al had a beneficial effect by suppressing the formation of nodules and by reducing the steady-state parabolic rate constant. Conversely, the addition of aluminum to Cu-7Cr prevented the oxidation of copper, producing a large decrease of the oxidation rate.
部门归属	chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china.;niu, y (reprint author), chinese acad sci, met res inst, state key lab corros & protect, shenyang 110016, peoples r china;tjpan@imr.ac.cn yniu@imr.ac.cn
关键词	Cu-7cr Cu-7cr-4al Alloys Oxidation High-temperature Oxidation Cu-cr Alloys Possible Scaling Modes 2-phase Binary-alloys Oxidant Pressures Atm O-2 700-900-degrees-c
URL	查看原文
WOS记录号	WOS:000244099000007
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34526
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wang,T. J. Pan,S. Wang,et al. Oxidation of Cu-7Cr and Cu-7Cr-4Al alloys at 1173K in 0.1MPa of pure oxygen[J]. High Temperature Materials and Processes,2006,25(4):225-230.
APA	S. Y. Wang,T. J. Pan,S. Wang,&Y. Niu.(2006).Oxidation of Cu-7Cr and Cu-7Cr-4Al alloys at 1173K in 0.1MPa of pure oxygen.High Temperature Materials and Processes,25(4),225-230.
MLA	S. Y. Wang,et al."Oxidation of Cu-7Cr and Cu-7Cr-4Al alloys at 1173K in 0.1MPa of pure oxygen".High Temperature Materials and Processes 25.4(2006):225-230.